Plaster support for walls



June 2, 1925.

F. S. HUTCHINSON PLASTER SUPPORT FOR WALLS Filed Feb. 12, 1923 l ENTOR.

I ATTORNEY.

Patented June 2, 1925.

UNITED S TATE.

FRANK S. I-IUTCHINSON, OF FLUSHING, NE YORK, ASSIGNOR. TO PLASTUC MFG. COR- PORATION, OF SYEACUSE, HEX? 203K, 1?; CO PORATION OF NEW YORK.

PLASTEB- SUPPORT FOR WALLS.

Application filed February 12, 1923; Serial No. 618,515.

To all whom it may concern:

Be it known that I. FRANK S. HUTGHIN- SOBT. a citizen of the United States, and a resident of Flushing, Queens County, New York, have in.'e1ited a new and useful 1mprovement in Plaster Supports for lValls, of which the following is a full, clear, and

exact description.

My invention relates to improvements in that class of plaster supports for walls which comes in the form of sheets or strips, and which does not contain plaster. I use the word plaster in a general sense, meaning' thereby a cementitious suhstance which ed in making a wall, such as mortar, to. or other cement. Plaster supports the kind to which my invention relates generally made of strips of paper or 01:. a width to span several wall studding, and which has a paper surface of rather open structure so that the cement can enter the pores thereof and adhere closely thereto.

These strips of fabric or paper are generally reinforced by cross slats which also serve to hold the cementitious body attached thereto,

a good exan'iple being shown in the patent to Potter, No. 1,423,879, dated July 25th,

When the plaster or cementitious body is app iied to supports of this kind, the body is wet an d heavy, and the paper being softened by the wet plaster or the like, is weakened, so that there is some danger of the support 35 tearing away. The object of my invention is to obviate this difficulty, which I do by having the back portion of the plaster support water-proofed thoroughly, and leaving the surface portion to which the plaster is applied of the usual porous character. If the two parts, that is the waterproof part, and the other part, are secured together, I thus get the advantage of having a practically indestructible backing to give the necessary strength and durability to the sup port, and a surface which will take the plaster or the like with facility. In carrying out the invention I prefer to make the water-proof part and the surface portion of separate sheets which can be fastened firmly together, and the waterprof part can preferably he treated with pitch or the like, which not only makes it waterproof, but if rolled or pressed firmly into the stock, makes it much stronger than it would be otherwise. Such a support can be provided with plaster engaging cleats of any usual or preferred kind. All of which will be more clearly understood from the description which follows.

Reference is to be had to the accompany ing drawings forming a part of this speciiioation, in which similar reference characters indicate corresponding parts in all the views.

Figure 1 is a broken front elevation of my improved plaster support as applied to a wall.

Figure 2 is an enlarged cross section on the line 22 of Figure 1, and

Figure 3 is a section on the line 83 of Figure 1.

The drawing is shown by way of example, and in it I have shown a surface 10 of porous paper such as generally used on materials of this cha acter, and a back layer 11 of water-proof paper which is preferably saturated with pitch, and rolled or pressed to make it smooth and firm. The two parts 10 and 11 are preferably united in any con--. venient way, as for instance by means of the cross strips or cleats 12. which are like those illustrated in the Potter patent above referred to, but so as my invention is concerned, these cross members can be of any usual or preferred kind. As shown, the members 12 are, of sheet metal. and have cl ps 13 punched out of them as shown at 14-. and the clips are forced through the members 10 and 11 and doubled over upon them so as to unite them firmly and fasten the member 12 in place.

The strips are attached in the usual way to the studding 15 or other support. and when the plaster 16, as shown by dotted lines in Figure 2, is laid, it imbeds the member 12. enters the pores of the surface member 10, and is held firmly in place, while the strengthened and water-proofed member or part 11 greatly strengthens the material, and as it is impervious to water, it is not weakened while the plaster or like cement is wet. A wall. therefore, laid with this material. will be much stronger than when the ordinary support is used, and will be far more durable. Also the wall is made tighter, and better resists the passage of air or sound through it.

Obviously the material can be prepared either in sheets, rolls, or other lengths ready for laying, or in long lengths which can be rolled up and out ofl as desired.

It Will also be apparent that a thick paper stock may have the back part treated to make it Water-proof, but the simpler and better Way is to'have a separate Water-proof layer or. layers at the back of the plaster support, substantially as specified.

In preparing the Water-proof backing, I prefer to use pitch or some equivalent adhesive material which can be applied hot and Will fill. the pores, and so make a firm homogeneous backing. r

I claim l 1. As an improved article of manufacture,

V a plaster support for Walls compris ng an essentially flat paper body having tln outer surface portion of porous untreated paper to effect a bond With the plaster, and the back Water-proofed.

2. A plaster support for Walls comprising back part thereof water-proofed, the front face of porous untreated paper and with cross cleats on the outer surface of the ma terial.

4. A plaster sup ort'for walls comprising a surface layer 0 porous untreated paper k w crproof material, the two. parts being firmly united, and cross cleats on the unwater-proofed part of the stock.

A plaster support for Walls comprising an essentially fiat laminated sheet With a backing of Water-proof material, and a plaster receiving surface of porous untreat- .ed paper.

6. A plaster support for walls compristo receive the plaster, a backing of" 60 i y i 

